The specific information I am looking for is the php code to use when I want to use $this->output() to return the category id.
For example /ask?cat=xx where xx is the category number.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.